Our spaceship aliens at all did not want to break into the earth, and even more harm to local residents. But we know that people tend to make mistakes, and the government of this country has decided to immediately send an army of soldiers to destroy no unsolicited offers. Our heroes do not choice but to defend themselves and to fight for your life. If you like to be a fighter for justice, then help them fight off the attacks of the army. Good aim and hit the enemy.